Hello world opengl

Formula/hello_world_opengl.rb

@@ -0,0 +1,128 @@
+class HelloWorldOpengl < Formula
+  desc "Simple OpenGL 'Hello, World!' program written in C"
+  homepage "https://gist.github.com/ipatch/8517a5914d56c45b0ebc4dd4df5160c4"
+  url "https://gist.github.com/ipatch/8517a5914d56c45b0ebc4dd4df5160c4/archive/0d6d0415b79378d5058d31391a209882af1fd867.tar.gz"
+  version "1.0"
+  sha256 "c8d18243fcff36af525d9d5082880a7ffff8750eae1a2a77f1d61f021ddf5fdf"
+  head "https://gist.github.com/ipatch/8517a5914d56c45b0ebc4dd4df5160c4.git", branch: "main"
+
+  depends_on "cmake" => :build
+  depends_on "ninja" => :build
+  depends_on "pkg-config" => :build
+  depends_on "xorg-server" => :build if OS.linux?
+  depends_on "glew"
+  depends_on "glfw"
+  depends_on "mesa" if OS.linux?
+  depends_on "mesa-glu"
+
+  # NOTE: ipatch, run below cmd to get latest commit hash to update stable URL
+  # curl -s "https://api.github.com/gists/8517a5914d56c45b0ebc4dd4df5160c4" | jq -r '.history[0].version'
+
+  def install
+    hbp = HOMEBREW_PREFIX
+    puts "---------------------------------------------------"
+    puts "#{HOMEBREW_PREFIX}                                 "
+    puts "---------------------------------------------------"
+    #-----
+    # https://github.com/Kitware/CMake/blob/master/Modules/FindOpenGL.cmake
+    #-----
+    # Could NOT find OpenGL (missing: OPENGL_opengl_LIBRARY OPENGL_glx_LIBRARY)
+    # CMake Error at /usr/share/cmake/Modules/FindPackageHandleStandardArgs.cmake:230 (message):
+    # Could NOT find OpenGL (missing: OPENGL_opengl_LIBRARY OPENGL_glx_LIBRARY)
+    # Could NOT find OpenGL (missing: OPENGL_glx_LIBRARY)
+    #----
+    # l $bp/opt/xorg-server/lib/xorg/modules/extensions/libglx.so
+    #---
+    # CMake Error at CMakeLists.txt:17 (target_link_libraries):
+    #   Target "hello_world_opengl" links to:
+    #
+    #   OpenGL::GLU
+    #
+    # but the target was not found.  Possible reasons include:
+    #
+    #   * There is a typo in the target name.
+    #   * A find_package call is missing for an IMPORTED target.
+    #   * An ALIAS target is missing.
+    #
+    #   -- Generating done (0.0s)
+    # CMake Generate step failed.  Build files cannot be regenerated correctly.
+
+    # NOTE: ipatch, tshooting oct 27, 2024
+    # TODO: fill in below dirs
+    # OPENGL_GLU_INCLUDE_DIR:PATH=OPENGL_GLU_INCLUDE_DIR-NOTFOUND
+
+    # CMAKE_OSX_ARCHITECTURES:STRING=
+    # CMAKE_OSX_DEPLOYMENT_TARGET:STRING=
+
+    cmake_prefix_paths = []
+
+    if OS.linux?
+      cmake_prefix_paths << Formula["mesa"].prefix
+      opengl_lib = Formula["mesa"].opt_prefix/"lib/libGL.so"
+      opengl_glx_lib = Formula["xorg-server"].opt_prefix/"lib/xorg/modules/extensions/libglx.so"
+
+      args_linux_only = %W[
+        -DOPENGL_opengl_LIBRARY=#{opengl_lib}
+        -DOPENGL_glx_LIBRARY=#{opengl_glx_lib}
+      ]
+    else # macos
+      macos_sdk =
+        "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk"
+      macos_opengl_lib =
+        "#{macos_sdk}/Library/Frameworks/OpenGL.framework/Versions/Current/Libraries/libGL.tbd"
+
+      apl_sdk = "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk"
+      apl_frmwks ="#{apl_sdk}/System/Library/Frameworks"
+      macos_opengl_lib
+    end
+
+    # TODO: remove refs to /library/developer/commandlinetools/
+    ENV.delete("CMAKE_LIBRARY_PATH")
+    ENV.delete("CMAKE_INCLUDE_PATH")
+
+    # -DOPENGL_GLU_INCLUDE_DIR=#{apl_frmwks}/OpenGL.framework
+    # -DOPENGL_glu_LIBRARY=#{apl_frmwks}/OpenGL.framework
+    args_macos_only = %W[
+      -DOPENGL_INCLUDE_DIR=#{apl_frmwks}/OpenGL.framework
+      -DOPENGL_gl_LIBRARY=#{apl_frmwks}/OpenGL.framework
+      -DCMAKE_OSX_SYSROOT=#{macos_sdk}
+      -DCMAKE_IGNORE_PATH=/Library/Developer/CommandLineTools/SDKs
+    ]
+
+    cmake_prefix_paths = []
+    cmake_prefix_paths << Formula["mesa-glu"].prefix
+    cmake_prefix_path_string = cmake_prefix_paths.join(";")
+
+    args = %W[
+      -DHOMEBREW_PREFIX=#{HOMEBREW_PREFIX}
+      -DCMAKE_FIND_USE_SYSTEM_ENVIRONMENT_PATH=FALSE
+      -DCMAKE_FIND_USE_CMAKE_SYSTEM_PATH=FALSE
+      -DCMAKE_IGNORE_PATH=#{hbp}/lib;
+
+      -DCMAKE_MAKE_PROGRAM=ninja
+
+      -DCMAKE_VERBOSE_MAKEFILE=1
+
+      -DCMAKE_BUILD_TYPE=RelWithDebInfo
+      -DCMAKE_PREFIX_PATH=#{cmake_prefix_path_string}
+      -DCMAKE_INSTALL_PREFIX=#{prefix}
+      -GNinja
+      -L
+    ]
+    # --trace
+
+    if OS.linux?
+      system "cmake", *args, *args_linux_only, "-S", ".", "-B", "_build"
+    else
+      system "cmake", *args, *args_macos_only, "-S", ".", "-B", "_build"
+    end
+
+    system "cmake", "--build", "_build"
+    system "cmake", "--install", "_build"
+  end
+
+  test do
+    system "true"
+    # assert_equal "Hello, World!", shell_output("#{bin}/hello_world_c")
+  end
+end